.left-box{
    position: fixed;
    width: 160px;
    height: calc(100% - 60px);
    top:60px;
    background: #544675;
    color: #fff;
}
.left-menu-list{
    list-style: none;
    padding: 0;
    width: 100%;
    cursor: pointer;
}
.left-menu-parent{
    height: 48px;
    line-height: 48px;
    padding:0 10px 0 20px;
}
.left-menu-list .parent-active,.left-menu-chid-name:hover,.left-menu-parent:hover{
    background: #8a70c6;
    color: #f4c721;
}
.left-menu-parent > i:first-child {
    font-size: 16px;
    margin-right: 10px;
    float: left;
}
.left-menu-parent > i:last-child{
    float: right;
    font-size: 18px;
    margin-top: 18px;
    color: #e1e1e1;
    transition: all 0.2s linear;
    transition: all 0.2s linear;
    
}
.left-menu-chid-name{
    height: 38px;
    line-height: 38px;
    letter-spacing: 1px;
    padding-left: 55px;
    font-size: 12px;
}
.left-menu-child{
    transition: all 0.2s linear;
    overflow: hidden;
}